OK, leaving for the flea market this AM...
About four miles from house, at 50 or so, get a rrriiiiiiittttt-clunk. Stop and check, nothing obviouls. The rrriiiiiiiitttt sound is fast (much faster than once per tire revolution). Once the clunk happens, all is quiet for the rest of the trip.
Finish the flea market, and headed to Wally World. About 40 MPH and get the exact same thing, but sooner, about two miles into the drive. Exact same noise. A quick rrriiiiiiittttt (we're talking a couple of seconds) and the clunk.
Finish Wally World, and pull out of the parking lot. A (short) block, make a left turn, and in the middle of the turn 'Clunk'. No rrriiiiitttt sound, but pronounced clunk.
Each time, happens once then never happens again for that drive. Three trip segments, got almost the same thing each time (with the exception that the third time, the pre-noise didn't happen.
The clunk feels and sounds just like a stuck brake pad, but since the truck was rolling (without any obvious binding that I could tell) this seems odd.
Recent repair(s): New pads all four corners. New hub on left front. Tires are OK.
Dodge Ram 2500 HD Hemi, automatic, standard cab.
Anyone like to take a WAG?